<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    function f() {
        this.a = 1
        return {
            b: 2
        }
    }
    let pigJZH = new f()
    console.log(o)
</script>
</body>
</html>
